| Issue |
122257
|
| Summary |
libclang: how to visit implicit declarations.
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
phadej
|
Consider simple `u.h` header
```c
union u {
int big;
struct {
char small1;
char small2;
};
};
```
`clang -Xclang -ast-dump -fsyntax-only` prints
```
`-RecordDecl 0xeba4a10 <u.h:1:1, line:7:1> line:1:7 union u definition
|-FieldDecl 0xeba4ac8 <line:2:2, col:6> col:6 big 'int'
|-RecordDecl 0xeba4b18 <line:3:2, line:6:2> line:3:2 struct definition
| |-FieldDecl 0xeba4bd0 <line:4:3, col:8> col:8 small1 'char'
| `-FieldDecl 0xeba4c30 <line:5:3, col:8> col:8 small2 'char'
|-FieldDecl 0xeba4cd8 <line:3:2> col:2 implicit 'struct u::(anonymous at u.h:3:2)'
|-IndirectFieldDecl 0xeba4d38 <line:4:8> col:8 implicit small1 'char'
| |-Field 0xeba4cd8 '' 'struct u::(anonymous at u.h:3:2)'
| `-Field 0xeba4bd0 'small1' 'char'
`-IndirectFieldDecl 0xeba4d90 <line:5:8> col:8 implicit small2 'char'
|-Field 0xeba4cd8 '' 'struct u::(anonymous at u.h:3:2)'
`-Field 0xeba4c30 'small2' 'char'
```
Notice, there is implicit fielddecl for `struct u::(anonymous ...)` as well as (implicit?) `IndirectFieldDecl`s.
However, when using `libclang` interface, in particular, [clang_visitChildren](https://clang.llvm.org/doxygen/group__CINDEX__CURSOR__TRAVERSAL.html#ga5d0a813d937e1a7dcc35f206ad1f7a91) only explicit declarations are visiible. I.e. we can only see first two declarations, `big 'int'` and `struct definition`.
In some cases it's very inconvenient to work with source code with tagless and/or field-nameless substructures.
Is there a way to also traverse implicit declarations?
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